gnome-control-center sound > test sound is not working anymore

This question came from
https://answers.launchpad.net/ubuntu/+source/pulseaudio/+question/233659

After I have done the following procedure, I lost "Test Sound" in sound setting.
# apt-get remove --purge alsa-base pulseaudio
# apt-get install alsa-base pulseaudio
# alsa force-reload

Of course sound is fine and I had problem in other login but it has been fixed, too. but I lost "Test Sound". I miss the lady's voice.

I found how to do it before and I used to know how to do it but I cannnot find it anymore somehow and I completely forgot how to do it.
Could you help me to get "Test Sound" back?